On December 13, 2001 in a horrific incident, five heavily-armed terrorists belonging to terror outfit Lashkar-e-Taiba (LeT) and Jaish-e-Mohammed (JeM), stormed the complex in New Delhi and opened fire indiscriminately.

Around 14 people, mostly security forces and one civilian, were killed in this incident.

The incident took place around 40 minutes after Parliament was adjourned and about 100 members were present in the building.